The Sink Holes (1 Viewer)

[mentaliss]

Any Scientist's out there!! this is the theory....we drill down, suck the oil out of the ground...leaves a huge cavern where the oil was, ground above the cavern becomes unstable Cars, Motorhomes start disappearing down the sink holes.....thats why they call me the Mentaliss

 

[Wildbill]

oil is trapped in the oil baring sands sink holes can be cussed by many things but the most common is historic mine working faulted ground where a fault has been bridged for hundreds even thousands of years and the wet weather and excessive ground water erodes away the fines cussing the bridged material to fail and a grate big hole end's up on the site
many old mine working were caped with timber steel sheets that rot away when there is nothing left it just collapses
un like modern mine working that are back filed or a substantial concrete cap put in the shaft with reinforced concrete reset in to the shaft walls at several levels in the shaft then back filed to ground level and will never move
bill

 

[buttons]

Any Scientist's out there!! this is the theory....we drill down, suck the oil out of the ground...leaves a huge cavern where the oil was, ground above the cavern becomes unstable Cars, Motorhomes start disappearing down the sink holes.....thats why they call me the Mentaliss

Dont know of any oil extraction around Hemel Hempsted. Apart from Buncefield that is.
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[GJH]

When I saw the headline "Hemel Hempsted sink hole" I had to wonder why it was supposedly news

 

[Wildbill]

Dont know of any oil extraction around Hemel Hempsted. Apart from Buncefield that is.
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e
I have done site investigation around there for the Buncefield project after the explosion and on the motorway works
it is substantial chalk deposits with washouts ther was also evidence of flint workings there is your answer collapsed chalk voided wash out or flint workings
missed the bit abut hamilhamsted

 

[buttons]

When I saw the headline "Hemel Hempsted sink hole" I had to wonder why it was supposedly news

Be careful what you say about Hemel Hemstead the residents are a very close family unit.

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[GJH]

Be careful what you say about Hemel Hemstead the residents are a very close family unit.

We have some friends who live in Hemel Hempsted - my reaction was based on their observations

 

[MikeD]

Dont know of any oil extraction around Hemel Hempsted. Apart from Buncefield that is.
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Buncefield only puts oil into the ground and flames and smoke into the air


Mind it was a big bang when it went up, the biggest in peacetime Europe by all accounts.

Maybe that had something to do with it.

The sink hole is probably just over 1/2 mile away from the boundary of Buncefield.

 

[buttons]

e
I have done site investigation around there for the Buncefield project after the explosion and on the motorway works
it is substantial chalk deposits with washouts ther was also evidence of flint workings there is your answer collapsed chalk voided wash out or flint workings
missed the bit abut hamilhamsted

Yep now nearly ten years on and I remember it as if it were yesterday. The main explosion even ten miles from the site, the force lifted my loft hatch and moved a few things around. No fatalities must have been an act of god.
I have attached the HSE report as to why it happened should you be interested. It does mention the make up of the ground. The devastation for a mile or two around the site was incredible.
http://www.hse.gov.uk/comah/buncefield/buncefield-report.pdf

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[pappajohn]

Be careful what you say about Hemel Hemstead the residents are a very close family unit.

Inbred ?

 

[callumwa]

Be careful what you say about Hemel Hemstead[HI] the residents are a very close family unit[/HI].

I did not say a word......

 

[Bebe]

China's Atlantis in progress? Or more appropriate ... Voyage to the centre of the earth. Could be ... One never knows ... frightening

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[Trikeman]

Isn't it a shame that one of these sink holes doesn't appear right in the centre of the House of commons - at PM question time???? It appears that even the floods don't enter that place.


Trikeman.

 

[1_man_and_his_dob(lo)]

The BBC Horizon programme a couple of weeks ago (good timing) was quite interesting....if you could get past the OTT presenter and production.

iPlayer: Horizon - Swallowed by a Sinkhole

BBC News

Florida is largely made of limestone and as construction spreads across the state it's being built on top of potential sinkholes.

Not all as bad as the one in Guatemala though

 

[Wyaye wires]

Sinkholes? I think I hit most of the buggers travelling south on Sunday. Didn't they used to be called potholes?

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[Scout]

stop worrying about petty sinkholes, theres a blxxdy big astriod 3x the size of a football pitch on its way past toady.


they say its going to pass 9 times the distance of the moon away, put Im putting my tin hat on:thumb:

 

[PhilandMena]

Here you go.

http://en.wikipedia.org/wiki/Sinkhole

 

[oldsooty]

Another sink hole in Ripon!!!, getting closer. Off to Spain in a week, wonder if they have any there.

Keith

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